The weightlifting clamp ring is designed with a quick release and locking action, which can be easily opened and closed with just one finger. It's easy to install, won't slip during use, and reduces damage to multiple plates. Designed to be used with all 5cm inner diameter weight bars. Clamp lock, simply slide on clamp close to lock in place. Quick mount removal, with good clamping ability. With rubber inserts to stop collar sliding when locked on the bar. It is suitable for sports, high-altitude press, weightlifting and other sports.It is widely used in outdoor activities such as homes and gyms.It has a strong grip and is easy to release quickly to change weight. Type: Barbell Clamp Material: ABS+Nylon Applications: Barbell Bar, Lever Bar, Bell Piece Attachment Features: Barbell Clamp, Fitness Spin Lock, Quick Release, Cross Training, Fitness Equipment Accessories Dimension: app.5cm/1.96in Color: Gray Package Include: 2 Pcs x Dumbbell drawstring Note: 1.Please allow 0-1cm error due to manual measurement.pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you